Hi, got a hex string
3E 65 72 3D 65
which first needs to be reversed to
C7 6A E4 CB 6A
then I need to move the 4 LSB in each byte to the 4 LSB in the next byte, need also to include 4 new bits (x) in the first byte of course, it will look like
Cx 67 EA C4 6B
Any ideas of existing functions?